WO1999061279A3 - Dual level gas generator - Google Patents

Dual level gas generator Download PDF

Info

Publication number
WO1999061279A3
WO1999061279A3 PCT/US1999/000393 US9900393W WO9961279A3 WO 1999061279 A3 WO1999061279 A3 WO 1999061279A3 US 9900393 W US9900393 W US 9900393W WO 9961279 A3 WO9961279 A3 WO 9961279A3
Authority
WO
WIPO (PCT)
Prior art keywords
discs
burst
chamber
air bag
rate
Prior art date
Application number
PCT/US1999/000393
Other languages
French (fr)
Other versions
WO1999061279A2 (en
Inventor
Robert S Scheffee
Original Assignee
Atlantic Res Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlantic Res Corp filed Critical Atlantic Res Corp
Priority to JP2000550705A priority Critical patent/JP4115087B2/en
Priority to KR1020007007962A priority patent/KR20010088271A/en
Priority to EP99953320A priority patent/EP1133416A4/en
Priority to CA002318172A priority patent/CA2318172A1/en
Publication of WO1999061279A2 publication Critical patent/WO1999061279A2/en
Publication of WO1999061279A3 publication Critical patent/WO1999061279A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
    • B60R21/272—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R2021/26094—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow characterised by fluid flow controlling valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/263—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output
    • B60R2021/2633—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output with a plurality of inflation levels

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

In order to allow for at least two different rates of air bag inflation a gas generator (100) is provided with a single pyrotechnic charge (101) which is disposed in a chamber (116) in which argon or a similar type of non-toxic inert gas is stored under pressure. The chamber (116) is closed off by two or more burst discs (118, 120), only one of which is not exposed to a selectively ignitable squib (122). The non-exposed burst disc (118) is arranged to breach when the pyrotechnic charge is ignited and increases the gas pressure in the chamber (116) to a predetermined pressure. Each other disc (120) is arranged to withstand the predetermined pressure and requires weakening by exposure to the heat from an associated squib (122) before breaching will occur. The hybrid compressed gas/pyrotechnic pressure generation is such that the rate of air bag inflation varies essentially in proportion to the area of the exit port or ports which are opened by the breach of the burst disc or discs (118, 120). By limiting the number of burst discs (118, 120) which are breached, the exit port area and the rate of air bag inflation/deployment can be controlled for slow speed collisions. Breaching all or more of the discs (118, 120) maximizes port area and increases the rate of pressurization to a level suitable for high speed collisions.
PCT/US1999/000393 1998-01-22 1999-01-22 Dual level gas generator WO1999061279A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2000550705A JP4115087B2 (en) 1998-01-22 1999-01-22 Two-stage gas generator
KR1020007007962A KR20010088271A (en) 1998-01-22 1999-01-22 Dual level gas generator
EP99953320A EP1133416A4 (en) 1998-01-22 1999-01-22 Dual level gas generator
CA002318172A CA2318172A1 (en) 1998-01-22 1999-01-22 Dual level gas generator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/010,541 1998-01-22
US09/010,541 US6116641A (en) 1998-01-22 1998-01-22 Dual level gas generator

Publications (2)

Publication Number Publication Date
WO1999061279A2 WO1999061279A2 (en) 1999-12-02
WO1999061279A3 true WO1999061279A3 (en) 2000-01-13

Family

ID=21746229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/000393 WO1999061279A2 (en) 1998-01-22 1999-01-22 Dual level gas generator

Country Status (6)

Country Link
US (1) US6116641A (en)
EP (1) EP1133416A4 (en)
JP (1) JP4115087B2 (en)
KR (1) KR20010088271A (en)
CA (1) CA2318172A1 (en)
WO (1) WO1999061279A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10006522B4 (en) 1999-03-05 2018-02-01 Trw Vehicle Safety Systems Inc. Inflator for a two-stage airbag
US6701849B2 (en) 1999-03-05 2004-03-09 Trw Inc. Dual stage air bag inflator with secondary propellant cap
US6237950B1 (en) * 1999-07-26 2001-05-29 Trw Vehicle Safety Systems Inc. Staged air bag inflator
US6189927B1 (en) * 1999-12-16 2001-02-20 Autoliv Asp, Inc. Adaptive output inflator
JP4587584B2 (en) * 2000-03-28 2010-11-24 ダイセル化学工業株式会社 Hybrid inflator
US6314889B1 (en) * 2000-06-12 2001-11-13 Autoliv Asp, Inc. Adaptive output pyrotechnic inflator
US6769714B2 (en) * 2002-06-13 2004-08-03 Key Safety Systems, Inc. Low onset dual stage hybrid inflator
JP2004352008A (en) * 2003-05-28 2004-12-16 Daicel Chem Ind Ltd Inflator
US7597354B2 (en) * 2004-10-28 2009-10-06 Automotive Systems Laboratory, Inc. Pressurized gas release mechanism
US7341276B2 (en) * 2005-10-03 2008-03-11 Key Safety Systems, Inc. Airbag module with external venting
ATE412560T1 (en) * 2005-12-20 2008-11-15 Key Safety Systems Inc GAS GENERATOR WITH THROTTLE VALVE FOR VARIABLE GAS FLOW
IL184216A0 (en) * 2007-06-25 2008-01-06 Rafael Advanced Defense Sys Two-stage airbag inflation system with pyrotechnic delay
FR2922006A1 (en) * 2007-10-03 2009-04-10 Livbag Soc Par Actions Simplif GAS GENERATOR HAVING DIFFUSION CHAMBER PROVIDED WITH INTERNAL CONDUIT
JP6251662B2 (en) * 2014-09-29 2017-12-20 株式会社ダイセル Gas generator

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US5060974A (en) * 1990-04-30 1991-10-29 Oea, Inc. Gas inflator apparatus
US5564743A (en) * 1995-03-22 1996-10-15 Morton International, Inc. Multiple stage air bag inflator system
US5613702A (en) * 1996-02-23 1997-03-25 Trw Vehicle Safety Systems Inc. Apparatus for inflating an inflatable vehicle occupant restraint
US5630619A (en) * 1996-02-28 1997-05-20 Morton International, Inc. Hybrid adaptive inflator for airbags
US5762369A (en) * 1994-10-31 1998-06-09 Hi-Shear Technology Corporation Air bag inflator using liquid monopropellant and adaptable to produce ouputs with various parameters
US5794973A (en) * 1996-12-04 1998-08-18 Trw Vehicle Safety Systems Inc. Dual stage air bag inflator
US5803494A (en) * 1996-08-07 1998-09-08 Trw Inc. Air bag inflator
US5893583A (en) * 1997-04-23 1999-04-13 Trw Vehicle Safety Systems Inc. Inflator for an inflatable vehicle occupant protection device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758131A (en) * 1972-01-11 1973-09-11 Allied Chem Inflation apparatus for safety device
US5060974A (en) * 1990-04-30 1991-10-29 Oea, Inc. Gas inflator apparatus
US5762369A (en) * 1994-10-31 1998-06-09 Hi-Shear Technology Corporation Air bag inflator using liquid monopropellant and adaptable to produce ouputs with various parameters
US5564743A (en) * 1995-03-22 1996-10-15 Morton International, Inc. Multiple stage air bag inflator system
US5613702A (en) * 1996-02-23 1997-03-25 Trw Vehicle Safety Systems Inc. Apparatus for inflating an inflatable vehicle occupant restraint
US5630619A (en) * 1996-02-28 1997-05-20 Morton International, Inc. Hybrid adaptive inflator for airbags
US5803494A (en) * 1996-08-07 1998-09-08 Trw Inc. Air bag inflator
US5794973A (en) * 1996-12-04 1998-08-18 Trw Vehicle Safety Systems Inc. Dual stage air bag inflator
US5893583A (en) * 1997-04-23 1999-04-13 Trw Vehicle Safety Systems Inc. Inflator for an inflatable vehicle occupant protection device

Also Published As

Publication number Publication date
US6116641A (en) 2000-09-12
EP1133416A4 (en) 2003-01-02
JP2002516208A (en) 2002-06-04
WO1999061279A2 (en) 1999-12-02
EP1133416A2 (en) 2001-09-19
CA2318172A1 (en) 1999-12-02
KR20010088271A (en) 2001-09-26
JP4115087B2 (en) 2008-07-09

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